# 7 Maths 5 Line and angles part 2

## Types of Angles

### Supplementary angle

Two angles are supplementary if they add up to . Supplementary angles do not have to be congruent or next to each other.

**Supplementary_angles.png**

Practice questions: http://www.ck12.org/book/CK-12-Basic-Geometry-Concepts/r9/section/1.8/

### Adjacent Angles and linear Pair

Two
angles are **adjacent** if
they have the same vertex, share a side, and do not overlap angle PSQ and angle QSR are
adjacent.

A **linear
pair** is
two angles that are adjacent and whose non-common sides form a straight line.
If two angles are a linear pair, then they are supplementary (add up to 180 deg) angle PSQ and angle QSR are
a linear pair.